[FIXED] Unmountable Boot Volume Error in Windows 10, 8, 7

The excruciating BSOD Windows 10 errors seem to be never-ending & one such error is the Unmountable_boot_volume error. But don’t worry, we are here to break this loop of never-ending errors by resolving such issues. So, let’s trace the path to fix Unmountable Boot Volume error in Windows 10, 8, 7 and XP.

What is the Unmountable Boot Volume error?

Firstly, let us understand what is a boot partition. A boot partition is a dedicated storage in the Hard-disk that stores the OS and system files namely of Windows 10. This partition is compulsory for proper booting of Windows.

Any glitch or damage or corruption in this disk partition might result in a temporary or permanent Blue screen displaying the error message as “Your PC ran into a problem and need to restart. We’ll restart for you. UNMOUNTABLE_BOOT_VOLUME”.

This is called as a BSoD or STOP error, more specifically, in this case, it is called as Unmountable boot partition Windows 10 BSOD error.

UNMOUNTABLE_BOOT_VOLUME Windows 10 BSoD error

Reasons for this error

There might be several potential reasons for addressing this issue:

BIOS settings forcibly configured for quick UDMA modes

Corrupted file system or Windows files

Poor sectors of the Hard disk

Defective or ruptured hard drive

MBR malfunctioning

How to Fix Unmountable BootVolume Error in Windows 10

The above reasons can be addressed using the solution lists provided below with detailed step by step description.

1. Just Reboot

Like any other STOP errors, the BSoD errors can be fixed by just rebooting the Windows.

This is because it might be a temporary issue that can be solved by just re-establishing or re-initiating Windows running/stopped processes by rebooting the Computer.

Although the PC will reboot automatically after hitting the BSoD.

So after rebooting, you might get lucky and will never see the error message on blue screen ever again.

2. Windows Auto-Repair via Installation disk

If you are stuck into a restartloop and couldn’treach to the homescreen, its time to use a Windows installation media. If you don’t own one, click hereto download the installation media tool.

The steps to create an installation media are clearly mentioned on the page so you won’t face any issue pertaining to that.

Windows Auto-repair is the best and one of the simplest solution one may approach towards fixing this error. To use this tool:

Insert the Windows Installation USB or Disk and Turn on the PC.

Press f7/f8/f9/f11/f3 to enter into BIOS. Change the boot priority to USB/CD drive depending on the type of our installation disk.

A Windows Setup screen will appear after a successful boot of your device. Chose your language.

In the bottom left corner of the next window, tap on Repair your computer at the bottom left.

Startup repair will automaticallyresolve this issue and stop the BSoD error message from appearing.

3. Re-establish Master Boot Record (MBR)

MBR is the data stored in the very first sector of any diskette that pinpoints the OS location so as to load into the RAM for a proper boot. If this MBR malfunctions, it throws the Unmountable boot volume error message with a blue screen.

In order to re-establish MBR and repair it for a proper boot to take place:

Step 4: After completion of the check disk it will ask you a question regarding checking the disk when the system restarts. Press Y for yes so that it can check next time when it restarts.

Step 5: Reboot your computer and wait for some time until chkdsk check your drive for errors. It takes a long time so be patient.

Note: If you are able to log into Windows then you can do the above without installationmedia by directly typing the command from explorer’scmd.

5. Perform a fresh installation of Windows

We deliberately keep this solution for the last resort as it requires deleting the data from your Local disk C: drive. But it will surely resolve this BSOD error as the new installation will wipeeverything along with the corrupted resources.

This will also re-establish the integrity of Windows which Might solve your issue.

In order to freshly install newWindows, use the same installation media and after choosing language click install in the Windows Setup page.

Conclusion

In Conclusion, these methods are very accurate as experienced by users who were facing the same issue. But in case if this issue still persists it is most likely to be an internal damage in the hard disk hardware. Consider changing to a new hard disk.

I hope the methods will help you fix Unmountable_Boot_Volume errors in Windows 10 as well as in earlier versions of Windows 8, 7 and Windows XP.